I work for a garbage company and we use these for our drivers route sheets. one binder for each day of the week. in the past we would need to replace our binders a few times a year. The new binders have lasted us 2 years now. Only had to replace two because the routs got bigger and needed a larger binder.
I am best organized when I have everything in one binder. Therefore I need something strong durable and will hold many 3-hole-punched papers. I also use plastic dividers. By the end of the semester it is quite full but still in very good shape. The binding tag on the outside makes finding the proper binder easy after it has been filed away at the end of the semester.
I use this for my middle schoolers. This is perfect because the areas where their binders have ripped before are made out of rubber on this binder. Great colors. My kids love them. I have not found this anywhere except for Staples.
I had planned to use this as a 'portfolio' for my son's school work and related documents. Since I had quite a few documents on the surface this seemed to be a perfect product. As soon as I got it home I put all of the documents (about 500 pages or so) and dividers in. Imagine my disappointment when the rings would not stay closed?!?!? I did not expect to have this problem the very first time I tried to close it at the price I paid!. Certainly would not recommend.